:root {
  --coral: #ff5a6f;
  --coral-dark: #e64960;
  --coral-light: #fff0f3;
  --coral-border: #ffd4dc;
  --background: #f8f8fa;
  --surface: #ffffff;
  --text: #1f1f23;
  --text-secondary: #6b6b73;
  --text-disabled: #a5a5ad;
  --border: #e8e8ec;
  --disabled: #f0f0f3;
  --success: #2e9d61;
  --warning: #f59e0b;
  --error: #dc3545;
  --information: #3b82f6;
  --shadow: 0 14px 40px rgba(31, 31, 35, 0.06);
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  background: var(--background);
  font-family: -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo",
    "Pretendard", "Noto Sans KR", "Segoe UI", sans-serif;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  word-break: keep-all;
}

a {
  color: inherit;
  text-decoration: none;
}

::selection {
  color: var(--text);
  background: var(--coral-border);
}

/* Home */
.home-page .container {
  width: min(100% - 40px, 960px);
  max-width: none;
  margin: 0 auto;
  padding: 0;
}

.home-page .nav {
  position: fixed;
  z-index: 100;
  top: 0;
  right: 0;
  left: 0;
  background: rgba(255, 255, 255, 0.9);
  border-bottom: 1px solid rgba(232, 232, 236, 0.9);
  backdrop-filter: blur(18px);
}

.home-page .nav-inner {
  width: min(100% - 40px, 960px);
  max-width: none;
  height: 64px;
  margin: 0 auto;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.home-page .nav-logo,
.legal-page .topbar-logo {
  display: inline-flex;
  gap: 9px;
  align-items: center;
  color: var(--text);
  font-size: 18px;
  font-weight: 800;
  letter-spacing: -0.04em;
  text-decoration: none;
}

.home-page .nav-logo::before,
.legal-page .topbar-logo::before {
  width: 24px;
  height: 24px;
  content: "";
  background: url("/assets/logo_app.png") center / cover no-repeat;
  border-radius: 7px;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.35);
}

.home-page .nav-links {
  display: flex;
  gap: 22px;
}

.home-page .nav-links a {
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 600;
  transition: color 160ms ease;
}

.home-page .nav-links a:hover {
  color: var(--coral-dark);
}

.home-page .hero {
  position: relative;
  overflow: hidden;
  padding: 156px 0 112px;
  text-align: left;
  background: var(--background);
}

.home-page .hero::after {
  position: absolute;
  top: 96px;
  right: max(calc((100vw - 960px) / 2), 20px);
  width: 156px;
  height: 156px;
  content: "";
  background: url("/assets/logo_app.png") center / cover no-repeat;
  border: 1px solid var(--coral-border);
  border-radius: 44px;
  opacity: 0.9;
  transform: rotate(8deg);
}

.home-page .hero .container {
  position: relative;
  z-index: 1;
}

.home-page .hero-badge {
  display: inline-flex;
  width: 88px;
  height: 88px;
  margin-bottom: 22px;
  padding: 0;
  border-radius: 22px;
  box-shadow: 0 14px 28px rgba(255, 90, 111, 0.2);
}

.home-page .hero-badge img {
  display: block;
  width: 100%;
  height: 100%;
  border-radius: inherit;
}

.home-page .hero h1 {
  max-width: 700px;
  margin-bottom: 22px;
  font-size: clamp(42px, 6vw, 64px);
  font-weight: 850;
  line-height: 1.14;
  letter-spacing: -0.055em;
}

.home-page .hero h1 span {
  color: var(--coral);
}

.home-page .hero .tagline {
  max-width: 560px;
  margin-bottom: 34px;
  color: var(--text-secondary);
  font-size: 18px;
  line-height: 1.75;
}

.home-page .app-store-badge {
  display: inline-flex;
  align-items: center;
  min-height: 48px;
  padding: 0 20px;
  color: var(--coral-dark);
  background: var(--surface);
  border: 1px solid var(--coral-border);
  border-radius: 14px;
  font-size: 14px;
  font-weight: 750;
  box-shadow: 0 8px 24px rgba(230, 73, 96, 0.08);
  text-decoration: none;
  transition: transform 160ms ease, box-shadow 160ms ease;
}

.home-page .app-store-badge:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(230, 73, 96, 0.14);
}

.home-page .hero-sub {
  margin-top: 12px;
  color: var(--text-disabled);
  font-size: 12px;
}

.home-page section {
  padding: 104px 0;
}

.home-page .section-label {
  margin-bottom: 10px;
  color: var(--coral-dark);
  font-size: 13px;
  font-weight: 750;
  letter-spacing: -0.01em;
  text-align: left;
  text-transform: none;
}

.home-page section h2 {
  max-width: 680px;
  margin-bottom: 12px;
  font-size: 32px;
  font-weight: 800;
  letter-spacing: -0.045em;
  text-align: left;
}

.home-page section .subtitle {
  margin-bottom: 44px;
  color: var(--text-secondary);
  font-size: 16px;
  text-align: left;
}

.home-page .intro-bg {
  background: var(--surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.home-page .intro-text {
  max-width: 760px;
  margin: 0;
  padding-left: 28px;
  color: var(--text-secondary);
  border-left: 4px solid var(--coral);
  font-size: 20px;
  line-height: 1.9;
  text-align: left;
}

.home-page .intro-text strong {
  color: var(--text);
}

.home-page .features-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  overflow: visible;
  background: transparent;
  border: 0;
  border-radius: 0;
}

.home-page .feature-card {
  position: relative;
  min-height: 190px;
  padding: 30px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 20px;
  text-align: left;
  transition: border-color 160ms ease, transform 160ms ease;
}

.home-page .feature-card:hover {
  background: var(--surface);
  border-color: var(--coral-border);
  transform: translateY(-2px);
}

.home-page .feature-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  margin-bottom: 26px;
  color: var(--coral-dark);
  background: var(--coral-light);
  border-radius: 10px;
  font-size: 12px;
  font-weight: 800;
}

.home-page .feature-card h3 {
  margin-bottom: 8px;
  font-size: 18px;
  letter-spacing: -0.025em;
}

.home-page .feature-card p {
  max-width: 340px;
  color: var(--text-secondary);
  font-size: 16px;
  line-height: 1.7;
}

.home-page .howto-bg {
  background: var(--surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.home-page .steps-list {
  max-width: 720px;
  margin: 0;
  list-style: none;
}

.home-page .steps-list li {
  display: flex;
  gap: 22px;
  align-items: flex-start;
  padding: 22px 0;
  border-bottom: 1px solid var(--border);
}

.home-page .steps-list li:last-child {
  border-bottom: 0;
}

.home-page .step-marker {
  display: flex;
  flex-shrink: 0;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  color: var(--surface);
  background: var(--coral);
  border: 0;
  border-radius: 12px;
  font-size: 13px;
}

.home-page .step-content {
  padding-top: 6px;
  color: var(--text-secondary);
  font-size: 16px;
  line-height: 1.6;
}

.home-page .step-content strong {
  color: var(--text);
}

.home-page .howto-note {
  max-width: 720px;
  margin-top: 26px;
  color: var(--text-disabled);
  font-size: 13px;
  text-align: left;
}

.home-page .data-table {
  width: 100%;
  max-width: none;
  margin: 0 auto;
  overflow: hidden;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  border-collapse: separate;
  border-spacing: 0;
}

.home-page .data-table thead th {
  padding: 15px 20px;
  color: var(--text-secondary);
  background: var(--disabled);
  border: 0;
  font-size: 12px;
  font-weight: 700;
  text-align: left;
}

.home-page .data-table tbody td {
  padding: 18px 20px;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
  vertical-align: top;
}

.home-page .data-table tbody td:last-child {
  color: var(--text-secondary);
}

.home-page .data-table tr:last-child td {
  border-bottom: 0;
}

.home-page .data-note {
  max-width: none;
  margin-top: 18px;
  color: var(--text-secondary);
  font-size: 13px;
  text-align: left;
}

.home-page .data-note a {
  color: var(--coral-dark);
  font-weight: 700;
  text-decoration: none;
}

.home-page .faq-list {
  max-width: 760px;
  margin: 0;
}

.home-page .faq-item {
  padding: 24px 0;
  border-bottom: 1px solid var(--border);
}

.home-page .faq-item:first-child {
  border-top: 1px solid var(--border);
}

.home-page .faq-item .q {
  margin-bottom: 10px;
  font-size: 16px;
  font-weight: 700;
}

.home-page .faq-item .a {
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.7;
}

.home-page .cta {
  padding: 92px 0;
  background: var(--coral);
  border: 0;
  text-align: left;
}

.home-page .cta h2 {
  margin-bottom: 12px;
  color: var(--surface);
  font-size: 34px;
  letter-spacing: -0.04em;
}

.home-page .cta p {
  margin-bottom: 32px;
  color: rgba(255, 255, 255, 0.82);
  font-size: 15px;
}

.home-page .cta .app-store-badge {
  color: var(--text);
  background: var(--surface);
  border-color: var(--surface);
  box-shadow: none;
}

.home-page footer,
.legal-page footer {
  background: var(--text);
}

.home-page footer {
  padding: 72px 0 48px;
  color: #a0a0aa;
  font-size: 13px;
}

.home-page footer .footer-brand,
.legal-page .footer-title {
  color: var(--surface);
}

.home-page footer .footer-brand {
  margin-bottom: 12px;
  font-size: 16px;
  font-weight: 700;
}

.home-page footer .footer-grid {
  display: flex;
  gap: 40px;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 40px;
}

.home-page footer .footer-links,
.legal-page footer .footer-links {
  display: flex;
  gap: 28px;
}

.home-page footer .footer-links a,
.legal-page footer .footer-links a {
  color: #d8d8dd;
  transition: color 160ms ease;
}

.home-page footer .footer-links a:hover,
.legal-page footer .footer-links a:hover {
  color: var(--surface);
}

.home-page footer .footer-info code,
.legal-page footer .footer-info code {
  padding: 2px 7px;
  color: #d8d8dd;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 4px;
  font-size: 12px;
  font-weight: 600;
}

.home-page footer .footer-info {
  color: #888890;
  line-height: 1.9;
}

.home-page footer .footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 28px;
  color: #686871;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

/* Privacy and terms */
.legal-page {
  color: var(--text);
  background: var(--background);
  font-size: 16px;
  line-height: 1.85;
}

.legal-page .container,
.legal-page .topbar-inner,
.legal-page footer .footer-inner {
  width: min(100% - 40px, 860px);
  max-width: none;
  margin: 0 auto;
  padding-right: 0;
  padding-left: 0;
}

.legal-page .topbar {
  position: sticky;
  z-index: 50;
  top: 0;
  padding: 0;
  background: rgba(255, 255, 255, 0.92);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(18px);
}

.legal-page .topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.legal-page .topbar-back {
  padding: 7px 11px;
  color: var(--text-secondary);
  background: var(--background);
  border-radius: 9px;
  font-size: 13px;
  font-weight: 650;
  text-decoration: none;
}

.legal-page .topbar-back:hover {
  color: var(--coral-dark);
  background: var(--coral-light);
}

.legal-page .page-header {
  padding: 72px 0 46px;
  background: transparent;
  text-align: left;
}

.legal-page .page-header h1 {
  margin-bottom: 12px;
  font-size: clamp(32px, 5vw, 44px);
  font-weight: 820;
  letter-spacing: -0.05em;
}

.legal-page .page-header .meta {
  color: var(--text-secondary);
  font-size: 14px;
}

.legal-page main.container {
  margin-bottom: 96px;
  padding: 64px 72px 88px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 24px;
  box-shadow: var(--shadow);
}

.legal-page h2 {
  margin: 64px 0 20px;
  padding: 0;
  color: var(--text);
  border: 0;
  font-size: 21px;
  font-weight: 780;
  letter-spacing: -0.03em;
}

.legal-page h2::before {
  display: block;
  width: 28px;
  height: 4px;
  margin-bottom: 14px;
  content: "";
  background: var(--coral);
  border-radius: 99px;
}

.legal-page h2:first-of-type {
  margin-top: 0;
}

.legal-page h3 {
  margin: 32px 0 12px;
  color: var(--text);
  font-size: 17px;
  font-weight: 730;
}

.legal-page p,
.legal-page li {
  color: #414147;
}

.legal-page p {
  margin-bottom: 15px;
}

.legal-page ul,
.legal-page ol {
  margin: 0 0 22px 22px;
}

.legal-page li {
  margin-bottom: 7px;
  padding-left: 2px;
}

.legal-page li::marker {
  color: var(--coral-dark);
  font-weight: 700;
}

.legal-page .table-wrap {
  margin: 22px 0 28px;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 14px;
}

.legal-page table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.legal-page thead th {
  padding: 13px 16px;
  color: var(--text-secondary);
  background: var(--disabled);
  border-bottom: 2px solid var(--text);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-align: left;
}

.legal-page tbody td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
  line-height: 1.7;
  vertical-align: top;
}

.legal-page tbody tr:last-child td {
  border-bottom: 0;
}

.legal-page tbody td:first-child {
  min-width: 130px;
  color: var(--text);
  font-weight: 650;
}

.legal-page code {
  padding: 2px 7px;
  color: var(--coral-dark);
  background: var(--coral-light);
  border-radius: 4px;
  font-size: 0.95em;
  font-weight: 500;
  white-space: normal;
}

.legal-page blockquote {
  margin: 20px 0;
  padding: 14px 18px;
  color: #765b19;
  background: #fff9e8;
  border-left: 3px solid var(--warning);
  border-radius: 0 10px 10px 0;
  line-height: 1.75;
}

/* Couple invitation */
.invite-page {
  min-height: 100vh;
  background:
    radial-gradient(circle at 50% 0, var(--coral-light), transparent 42%),
    var(--background);
}

.invite-page .invite-shell {
  display: grid;
  min-height: 100vh;
  padding: 40px 20px;
  place-items: center;
}

.invite-page .invite-card {
  width: min(100%, 480px);
  padding: 48px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 28px;
  box-shadow: var(--shadow);
  text-align: center;
}

.invite-page .invite-logo {
  display: inline-flex;
  gap: 9px;
  align-items: center;
  margin-bottom: 34px;
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.04em;
}

.invite-page .invite-logo::before {
  width: 26px;
  height: 26px;
  content: "";
  background: url("/assets/logo_app.png") center / cover no-repeat;
  border-radius: 8px;
}

.invite-page .invite-badge {
  display: table;
  margin: 0 auto 18px;
  padding: 6px 11px;
  color: var(--coral-dark);
  background: var(--coral-light);
  border: 1px solid var(--coral-border);
  border-radius: 8px;
  font-size: 13px;
  font-weight: 700;
}

.invite-page h1 {
  margin-bottom: 30px;
  font-size: 32px;
  font-weight: 850;
  line-height: 1.3;
  letter-spacing: -0.045em;
}

.invite-page .invitation-result {
  padding: 24px;
  background: var(--background);
  border: 1px solid var(--border);
  border-radius: 18px;
}

.invite-page .invite-description {
  color: var(--text-secondary);
  font-size: 15px;
}

.invite-page .connection-code {
  margin: 18px 0;
  color: var(--coral-dark);
  font-size: 36px;
  font-weight: 850;
  letter-spacing: 0.22em;
  line-height: 1;
  text-indent: 0.22em;
}

.invite-page .invite-note {
  color: var(--text-disabled);
  font-size: 13px;
}

.invite-page .app-store-button {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  min-height: 46px;
  margin-top: 24px;
  padding: 0 20px;
  color: #fff;
  background: var(--coral);
  border-radius: 12px;
  font-size: 14px;
  font-weight: 750;
  text-decoration: none;
  transition: background 160ms ease, transform 160ms ease;
}

.invite-page .app-store-button:hover {
  background: var(--coral-dark);
  transform: translateY(-2px);
}

.invite-page .invite-links {
  display: flex;
  gap: 18px;
  justify-content: center;
  margin-top: 28px;
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 600;
}

.invite-page .invite-links a:hover {
  color: var(--coral-dark);
}

.legal-page footer {
  padding: 56px 0 42px;
  color: #a0a0aa;
  font-size: 14px;
}

.legal-page footer .footer-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  align-items: center;
  justify-content: space-between;
}

.legal-page footer .footer-info {
  color: #8f8f98;
  line-height: 1.8;
}

.legal-page footer .copyright {
  margin-top: 8px;
  color: #686871;
}

@media (max-width: 760px) {
  .home-page .hero::after {
    top: 102px;
    right: -54px;
    width: 128px;
    height: 128px;
    opacity: 0.45;
  }

  .home-page .hero {
    padding: 132px 0 84px;
  }

  .home-page section {
    padding: 80px 0;
  }

  .home-page .features-grid {
    grid-template-columns: 1fr;
  }

  .home-page .feature-card {
    min-height: auto;
  }

  .home-page .footer-grid {
    flex-direction: column;
    gap: 24px;
  }

  .legal-page footer .footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .legal-page main.container {
    padding: 48px 34px 64px;
    border-radius: 20px;
  }
}

@media (max-width: 520px) {
  .home-page .container,
  .home-page .nav-inner,
  .legal-page .container,
  .legal-page .topbar-inner,
  .legal-page footer .footer-inner {
    width: min(100% - 32px, 960px);
  }

  .home-page .nav-links {
    gap: 12px;
  }

  .home-page .nav-links a {
    font-size: 12px;
  }

  .home-page .hero h1 {
    font-size: 39px;
  }

  .home-page .hero .tagline {
    font-size: 16px;
  }

  .home-page section h2 {
    font-size: 27px;
  }

  .home-page .intro-text {
    padding-left: 20px;
    font-size: 17px;
  }

  .home-page .data-table {
    display: block;
    overflow-x: auto;
  }

  .home-page .footer-bottom {
    flex-direction: column;
    gap: 8px;
    align-items: flex-start;
    text-align: left;
  }

  .legal-page .page-header {
    padding: 54px 0 34px;
  }

  .legal-page main.container {
    width: 100%;
    margin-bottom: 64px;
    padding: 42px 22px 56px;
    border-right: 0;
    border-left: 0;
    border-radius: 0;
    box-shadow: none;
  }

  .legal-page .table-wrap {
    overflow-x: auto;
  }

  .legal-page table {
    min-width: 560px;
  }

  .invite-page .invite-shell {
    padding: 0;
  }

  .invite-page .invite-card {
    min-height: 100vh;
    padding: 42px 24px;
    border: 0;
    border-radius: 0;
    box-shadow: none;
  }

  .invite-page h1 {
    font-size: 29px;
  }
}